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P0226 Code – What Does It Mean & How To Fix It

This is one of the most frequent OBD2 trouble codes. Read the full article below to know what it means, how to fix it, and what other codes may show related to it.


The throttle/pedal position sensor/switch “C” circuit may have a problem, according to the P0226 Diagnostic Trouble Code (DTC), an OBD-II (On-Board Diagnostics II) code. It indicates a specific issue with the throttle position sensor (TPS) circuit signal being outside of the expected range.


The P0226 code is triggered by your vehicle’s onboard computer if it discovers that a signal from “Throttle Position Sensor” switch “C” has not been detected in the intended range. The engine’s performance and durability may be impaired due to this imbalance in the signal.


The P0226 code may be activated for a number of reasons, such as:

  • Faulty Throttle Position Sensor (TPS): A malfunctioning TPS that provides incorrect or erratic signals to the engine control module (ECM) can trigger the P0226 code.
  • Damaged Wiring or Connectors: The TPS circuit might have damaged wiring, loose connections, or corroded terminals, causing the signal to be out of range.
  • Throttle Body Issues: The code may be set off by issues with the throttle body, such as a broken throttle plate or a jammed throttle position sensor.
  • ECM Issues: In a few uncommon circumstances, the engine control module may be broken, misinterpreting the TPS signals, and resulting in the P0226 code.


When the P0226 code is present, drivers may experience the following symptoms:

  • Check Engine Light: The most noticeable symptom is the illumination of the Check Engine Light on the vehicle’s dashboard.
  • Decreased Engine Performance: The engine’s response to throttle inputs may be slow, which causes poor acceleration and diminished power.
  • Problems with engine idling: The engine may idle harshly or erratically.
  • Unresponsive Throttle: The throttle may stop working or respond slowly, making it difficult to regulate the speed of the vehicle.


The following actions are necessary for an accurate diagnosis of the P0226 code

  • OBD-II Scanner: To get the precise fault code recorded in the ECM, a certified mechanic will utilize an OBD-II scanner.
  • Visual Inspection: The throttle position sensor and its wiring will be visually inspected by the technician to look for any obvious problems, including frayed wires or loose connections.
  • Testing of the TPS: The TPS will be checked using a digital multimeter to make sure it is producing the right voltage and signal and that it is within the anticipated range.
  • Throttle Body Examination: The throttle body will be checked for any mechanical problems, like a jammed throttle plate, that can impair TPS performance.
  • ECM Testing: The ECM may occasionally need to be tested to make sure it is operating properly and isn’t the source of the code.

Common mistakes

Some frequent errors made while diagnosing and fixing the P0226 code are as follows:

  • Ignoring Wiring Problems: Ignoring any wiring difficulties might result in problems that never get fixed.
  • Ignoring Throttle Body Inspection: Technicians may concentrate entirely on the TPS without looking for any throttle body issues, leading to insufficient repairs
  • Skipping TPS Testing: If the TPS is not tested and it is assumed to be defective, it may be essential to replace the item.

How serious is this?

Since the P0226 Code may result in a deterioration of engine performance and unsafe driving conditions, it should not be ignored. While it is possible that the vehicle will be able to drive, addressing this problem as soon as possible in order to avoid damage or potential safety risks should be a priority.

What repairs can fix the code?

repair manuals

The following fixes can remove the P0226 error code in accordance with the diagnosis:

  • Replacement of the throttle position sensor: If the TPS is malfunctioning and providing signals outside of the permitted range, a new, functional unit should be installed in its place.
  • Maintenance or Cleaning Wiring/Connectors: To guarantee appropriate signal transmission, any broken wiring or sloppy connections should be fixed or cleaned.
  • Throttle Body Repair or Replacement: In order to restore correct TPS operation, the throttle body may need to be fixed or replaced if it is faulty.
  • ECM Replacement: In extremely rare circumstances when the ECM is the problem, it will need to be replaced or reprogrammed.

Related codes

Other related codes that might be associated with P0226 include P0220, P0221, P0222, P0223, and P0225, which all pertain to issues with the throttle position sensor and its circuitry.


Vehicle performance and reliability can be seriously affected by the P0226 DTC code. It is important to seek the assistance of a qualified mechanic who will diagnose and resolve the problem without delay if you notice any of the signs mentioned above or have experience checking engine lights.

Failure to follow the code or delay repairs may result in more serious problems and, if not repaired properly, could lead to significant costs. In order to ensure the smooth operation of your car on the road, you should keep an eye on the P0226 code at all times.

P0226 Code – What Does It Mean & How To Fix It